Symbolic Matrix Multiplication in Simulink

I want to simulate a state space system in Simulink but my A and B matrixes is symbolic. A and B matrices are dependent to variables in x vector. Some elements of A and B matrices contain elements of x state vector.

I created general x_dot = Ax +Bu, y = Cx system in Simulink. But whenever I tried to put my A and B symbolic matrices to Gain blocks, it gives error.

"Invalid setting in 'Gain1' for parameter 'Gain'.

I also tried Control System Toolbox with symbolic matrices, but no luck.

How do I simulate my system represented with A,B and C matrices?

Answer 1

[fouad koudsi]

try to covert the matrices from sym to numeric, you can use

https://www.mathworks.com/help/symbolic/double.html?s_tid=srchtitle

You may need to assign a new name for A and B to be used in simulink

I hope it helps!